While there are numerous universal OEM closed cooling kits, this is not one of those. This is a true custom engineered and developed closed cooling system designed around traditional Std. deck height 9.8" Big Block Chevrolet applications. The kit is perfect for the 454 CID through 540 CID engines making up to 650 horsepower. We offer the closed cooling tank in a paint-to-finish primed coated version. The kit comes with tank, brackets, hoses, and thermostat housing.This High Performance Closed Cooling kit is designed for applications with horsepower levels to 650HP.

Fits: 454 CID through 540 CID engines. The 625-4580 is a full system, cooling the engine and manifolds.

While there are numerous universal OEM closed cooling kits, this is not one of those. This is a true custom engineered and developed closed cooling system designed around traditional standard deck height 9.8" Big Block Chevrolet applications. The kit is perfect for the 454 CID through 540 CID engines making up to 650 horsepower. We offer the closed cooling tank in a paint-to-finish primed coating. The kit comes with tank, brackets, hoses, and thermostat housing. This High Performance Closed Cooling kit is designed for applications with horsepower levels to 650HP.

These kits are designed to be used with the Hardin Marine serpentine drive kits